Electronic Handbrake Saga

[FPV]

hey guys/gals..need your advice: Replaced the handbrake module a week ago and all was good up untill now. I get an intermittent parking brake light that comes up. The functioning of the electronic handbrake works normally ie activates and releases on pressing the button. I've also changed the button/switch. My OBD11 has given these faults: 1) Right Parking Brake Motor Voltage Supply 02433, 2) Control module right channel voltage supply 02435 3)Function Restriction implausible signal 03263. Called my Mechanic who suggests rear caliper as I've already replaced the module but wants to scan the car. Will a VCDS provide a more detail answer, or should I just purchase a new caliper and try it. Help pls

[Lucas_R]

Very unlikely to be your actual brake caliper assuming its functioning correctly mechanically. Its much more likely to be the electronic motor attached to the rear caliper which engages and disengages the handbrake.

The motor's are not expensive, I purchased one for my Audi SQ5 about 18 months ago and it was about $100 https://www.rolan.com.au/trw-parking...w-sta1583.html

Your car being a B6 Passat uses a different part number for the motor, and according to the TRW product catalogue it should be part # STA1498 for a B6 Passat. Best to double check and do your own research before buying anything though. https://aftermarket.zf.com/en/aftermarket-portal/our-catalog/search-by-vehicle/#/article/STA1498?languageID=4&brandID=14,22,32,35,68,126,16 1,294,8888&countryID=AUS

https://www.ebay.com.au/itm/197466566416

The other possible cause of your errors is some damaged wiring or a damaged plug - if you have run over some road debris it might have damaged something.

[FPV]

Thank you and much appreciated for the detail response. Will look into it

[DV52]

FPV: Hi.

Maybe before you start throwing money at more new parts for this car - read the Ross-Tech wki pages for error codes 02433 and 02435

Don

[FPV]

FPV: Hi.

Maybe before you start throwing money at more new parts for this car - read the Ross-Tech wki pages for error codes 02433 and 02435

Don

ooh thanks..handy info.

[FPV]

Very unlikely to be your actual brake caliper assuming its functioning correctly mechanically. Its much more likely to be the electronic motor attached to the rear caliper which engages and disengages the handbrake.

The motor's are not expensive, I purchased one for my Audi SQ5 about 18 months ago and it was about $100 https://www.rolan.com.au/trw-parking...w-sta1583.html

Your car being a B6 Passat uses a different part number for the motor, and according to the TRW product catalogue it should be part # STA1498 for a B6 Passat. Best to double check and do your own research before buying anything though. https://aftermarket.zf.com/en/aftermarket-portal/our-catalog/search-by-vehicle/#/article/STA1498?languageID=4&brandID=14,22,32,35,68,126,16 1,294,8888&countryID=AUS

https://www.ebay.com.au/itm/197466566416

The other possible cause of your errors is some damaged wiring or a damaged plug - if you have run over some road debris it might have damaged something.

Do I need access to VCDS inorder to replace the motor?

[Lucas_R]

Do I need access to VCDS inorder to replace the motor?

It doesnt need to be VCDS, but you will need a scan tool of some kind to put the parking brake into service mode before removing the parking brake motor. I personally use Carista but another popular option is OBDEleven.

[DV52]

FPV : With Lucas_R forgiveness for stealing his thunder - the answer to your question is both YES and NO. Officially, the recommended way of replacing the motor is via a good diagnostic device and if your intention is to DIY future problems on this car -it's probably a good idea to have this tool in your garage. If you go this route - maybe expand your options beyond VCDS. The Ross-Tech product ain't the only kid on the block these days!

However, there are quite acceptable other ways of retracting the brake calipers and accessing the motor without using a diagnostic device. Basically, these alternative methods either use the car battery and a make-shift temporary 2 x wire lead, or the rotor in the motor cab be manually unwound. I suggest that you search You-tube for the many videos explaining these methods

Don